CN112853904A - Solid waste base-activated cementing road building material, preparation method and road building method - Google Patents
Solid waste base-activated cementing road building material, preparation method and road building method Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0906—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
- E01C23/0926—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/46—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing and placing the materials, e.g. slurry seals
- E01C19/47—Hydraulic cement concrete mixers combined with distributing means specially adapted for road building
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
- E01C19/4806—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing
- E01C19/4826—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing the materials being aggregate mixed with binders
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/03—Arrangements for curing paving; Devices for applying curing means; Devices for laying prefabricated underlay, e.g. sheets, membranes; Protecting paving under construction or while curing, e.g. use of tents
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
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- Mining & Mineral Resources (AREA)
- Road Paving Structures (AREA)
Abstract
A solid waste base-activated cementing road building material, a preparation method and a road building method are disclosed, wherein the road building material comprises the following components: 45-68 parts of slag; 23 parts of fly ash; 382 parts of original road mud-bonded gravel material; 40-55 parts of water glass. The preparation method comprises the following steps: mixing sodium silicate, sodium hydroxide and water uniformly to prepare a water glass excitant with the water content of 75% and the modulus of 1.5; 23 parts of fly ash, 45 parts of slag, 382 parts of original road cemented macadam material and 55 parts of water glass excitant are sequentially put into a stirrer to be uniformly stirred to obtain the road building material. The road building method comprises the following steps: uniformly spreading the fly ash and the slag on the road surface of the original road by using a powder spreader; planing and milling the original soil hardened pavement by using a cold recycling machine; injecting an excitant to fully mix the excitant and the solid mixed material; repeatedly rolling and leveling the road surface by adopting a road roller and a road leveling machine; the material and the preparation method have low manufacturing cost and good environmental protection performance; the method has simple process and high road building efficiency.
Description
Technical Field
The invention belongs to the field of mine transportation, and particularly relates to a solid waste base-activated cementing road building material, a preparation method and a road building method.
Background
Due to geological conditions of strip mines, mine roads are temporary non-hardened roads which are easy to damage and generate dust; often lead to the road muddy when meetting rainy season or excessive watering, easily arouse skidding of vehicle, bring serious transportation potential safety hazard. In order to ensure the safety of transportation, how to improve the road building quality of the surface mine becomes a problem to be solved urgently.
The construction method of the open-pit road at the present stage mostly adopts a road grader to level the road and then adopts a road roller to compact the road surface, the whole construction process is too simple, the quality of the molded road is low, and the following problems are usually existed: the truck has the advantages of low road surface strength, easy damage, serious road dust, high maintenance cost, high truck tire abrasion, low vehicle running speed, high failure rate and high production cost.
The similar road building method of the invention has FRT process, also called soil slurry road, and the basic principle is as follows: a chemical agent is used to discharge the strong bound water in clay to increase the strength of clay, and broken stone aggregate is used to increase the strength of road surface. The method has higher requirements on raw materials, depends heavily on red clay which is a scarce resource and is limited to be developed at present, so the method is not suitable for large-scale popularization; in addition, the strength range of the slurry road is 3-13.8 MPa, and the requirement of long-term use of the heavy-load road of the surface mine cannot be met.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a solid waste base-activated cementing road building material and a road building method, wherein the road building material has the advantages of low manufacturing cost, good environmental protection performance and wide source range; the preparation method has simple steps, and can prepare the road building material which has good stability and is suitable for the road construction of the surface mine; the method has simple process and high road building efficiency, and can form a high-quality road.
In order to achieve the purpose, the invention provides a solid waste base-activated cementitious road building material which is characterized by comprising the following raw materials in parts by mass:
as a preference;
further, in order to ensure the reliability of the performance of the road building material, the fly ash is first-grade fly ash; the original road material is solid particles with the particle size of 0.1 mm-50 mm.
Preferably, the water glass is liquid sodium silicate.
The road building material is mainly prepared from industrial waste residues, is low in cost and good in environmental protection performance, and meanwhile, the source of the road building material is wide and not limited. The original road mud-bonded gravel material in the road building material is a target modification material and is also an aggregate part in the road building material, so that the compression strength is good, and the performance is stable. The material can replace concrete, can meet the environment-friendly requirement of mines, and is an environment-friendly, efficient and economic road building material for mines, which can be applied in a large scale.
The invention also provides a preparation method of the solid waste base-activated cementitious road building material, which comprises the following steps:
step one, sodium silicate, sodium hydroxide and water are evenly mixed to prepare a water glass excitant with the water content of 75 percent and the modulus of 1.5;
and step two, sequentially putting 23 parts of fly ash, 45 parts of slag, 382 parts of the original road cemented gravel material and 55 parts of the exciting agent prepared in the step one into a stirrer for uniform stirring to obtain the road building material.
In the method, the slag, the fly ash and the excitant can generate polycondensation reaction, so that a main body part generating strength can be obtained; meanwhile, weak polycondensation reaction is generated between the original road cemented macadam material and the exciting agent, so that the road cemented macadam material is used as an aggregate filling part of the road building material. The method uses the polymer as the road building material, can obtain the road building material with stable performance and good compressive strength, and simultaneously has simple steps and low manufacturing cost, thereby being suitable for large-scale popularization and use.
The invention also provides a road building method, which comprises the following steps:
s1: adopting a powder spreading machine to mix the fly ash and the slag according to a mass ratio of 1: 2 are uniformly paved on the road surface of the original road in proportion;
s2: planning and milling the original soil hardened pavement by using a cold recycling machine, wherein the planning and milling depth is 15 cm; in the process, the original soil hardened pavement is smashed into a cemented gravel material, and the fly ash, the slag and the smashed cemented gravel material are uniformly mixed to form a solid mixed material, so that the primary powder mixing is completed;
s3: filling an excitant in an excitant carrying vehicle, connecting a cold regenerator with the excitant carrying vehicle through a pipeline, enabling the cold regenerator and the excitant carrying vehicle to run at the same speed, carrying out secondary planning and milling on the road surface through the cold regenerator, and injecting the excitant to the road surface through an injection device positioned in front of a cold regenerator planning and milling device while carrying out secondary planning and milling on the road surface, so that the excitant and a solid mixed material are fully mixed, and the secondary excitant mixing is completed;
the excitant is a water glass excitant with the water content of 75% and the modulus of 1.5, and is prepared by uniformly mixing sodium silicate, sodium hydroxide and water;
s4: carrying out road surface leveling operation by adopting a road leveling machine;
s5: rolling the road surface for 4-6 times in a reciprocating manner by using a road roller;
s6: and laying a mulching film on the road surface for rain protection, wherein the maintenance time is 1 d.
Further, in order to ensure the construction quality of the pavement, in S2, the running speed of the cold recycling machine is 5m/min, and the jet flow of the exciting agent is 190L/min.
Further, in order to ensure the construction quality of the road surface, in S3, the mass fraction of the exciting agent is 30%, and the modulus is 1.5.
Further, in order to ensure the construction quality of the road surface, the traveling speed of the road roller is maintained at 20m/min in S5.
The method adopts the cold recycling machine as the core equipment, has high degree of mechanization and high speed, can directly carry out construction on the original pavement, realizes the rapid in-situ mixing and stirring and rapid forming of the road building raw materials, and reduces the intermediate links of the construction. The road surface is repeatedly rolled and strickled by the road leveling machine and the road roller, and the strength and the flatness of the mine transportation road surface can be ensured. The method can improve the strength and the flatness of the mine muddy macadam road, effectively reduce the generation amount of road dust, and simultaneously help to eliminate the potential traffic accident hazard caused by road muddy, reduce the tire abrasion and the rolling friction resistance of the road, improve the transportation efficiency and reduce the abrasion rate of the tire, thereby reducing the production cost by improving the road quality and providing a foundation guarantee for realizing unmanned driving of mines. The method utilizes the polycondensation reaction between the excitant and the slag and the fly ash to obtain a main body part, and then utilizes the weaker polycondensation reaction between the excitant and the original road cemented macadam material to obtain an aggregate part used as filling, so that the compressive strength and the durability of the construction road can be effectively ensured. Meanwhile, as the main body of the road building material adopts industrial waste residues, industrial solid wastes generated by mines and peripheral industrial enterprises can be consumed in a large scale, a circular economy mode taking surface mines as the center can be formed, and the healthy sustainable development of the mines and the peripheral industrial enterprises can be driven. The method is simple in operation process, simple and convenient in construction process and suitable for the requirement of rapid pavement of main transportation main roads for mine construction.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a stress-strain diagram of a sample of the road material of the present invention.
Detailed Description
The present invention will be described in further detail below.
The invention provides a solid waste base-activated cementitious road building material which is characterized by comprising the following raw materials in parts by mass:
as a preference;
in order to ensure the reliability of the performance of the road building material, the fly ash is first-grade fly ash; the original road material is solid particles with the particle size of 0.1 mm-50 mm.
Preferably, the water glass is liquid sodium silicate.
The road building material is mainly prepared from industrial waste residues, is low in cost and good in environmental protection performance, and meanwhile, the source of the road building material is wide and not limited. The original road mud-bonded gravel material in the road building material is a target modification material and is also an aggregate part in the road building material, so that the compression strength is good, and the performance is stable. The material can replace concrete, can meet the environment-friendly requirement of mines, and is an environment-friendly, efficient and economic road building material for mines, which can be applied in a large scale.
The invention also provides a preparation method of the solid waste base-activated cementitious road building material, which comprises the following steps:
step one, sodium silicate, sodium hydroxide and water are evenly mixed to prepare a water glass excitant with the water content of 75 percent and the modulus of 1.5;
and step two, sequentially putting 23 parts of fly ash, 45 parts of slag, 382 parts of the original road cemented gravel material and 55 parts of the exciting agent prepared in the step one into a stirrer for uniform stirring to obtain the road building material.
In the method, the slag, the fly ash and the excitant can generate polycondensation reaction, so that a main body part generating strength can be obtained; meanwhile, weak polycondensation reaction is generated between the original road cemented macadam material and the exciting agent, so that the road cemented macadam material is used as an aggregate filling part of the road building material. The method uses the polymer as the road building material, can obtain the road building material with stable performance and good compressive strength, and simultaneously has simple steps and low manufacturing cost, thereby being suitable for large-scale popularization and use.
As shown in FIG. 1, the present invention also provides a method of constructing a road, comprising the steps of:
s1: adopting a powder spreading machine to mix the fly ash and the slag according to a mass ratio of 1: 2 are uniformly paved on the road surface of the original road in proportion;
s2: planning and milling the original soil hardened pavement by using a cold recycling machine, wherein the planning and milling depth is 15 cm; in the process, the original soil hardened pavement is smashed into a cemented gravel material, and the fly ash, the slag and the smashed cemented gravel material are uniformly mixed to form a solid mixed material, so that the primary powder mixing is completed;
s3: filling an excitant in an excitant carrying vehicle, connecting a cold regenerator with the excitant carrying vehicle through a pipeline, enabling the cold regenerator and the excitant carrying vehicle to run at the same speed, carrying out secondary planning and milling on the road surface through the cold regenerator, and injecting the excitant to the road surface through an injection device positioned in front of a cold regenerator planning and milling device while carrying out secondary planning and milling on the road surface, so that the excitant and a solid mixed material are fully mixed, and the secondary excitant mixing is completed;
the excitant is a water glass excitant with the water content of 75% and the modulus of 1.5, and is prepared by uniformly mixing sodium silicate, sodium hydroxide and water;
s4: carrying out road surface leveling operation by adopting a road leveling machine;
s5: rolling the road surface for 4-6 times in a reciprocating manner by using a road roller;
s6: and laying a mulching film on the road surface for rain protection, wherein the maintenance time is 1 d.
In order to ensure the construction quality of the pavement, in S2, the running speed of the cold recycling machine is 5m/min, and the jet flow of the exciting agent is 190L/min.
In order to ensure the construction quality of the pavement, in S3, the mass fraction of the excitant is 30%, and the modulus is 1.5.
In order to ensure the construction quality of the road surface, the travel speed of the road roller is maintained at 20m/min in S5.
The method adopts the cold recycling machine as the core equipment, has high degree of mechanization and high speed, can directly carry out construction on the original pavement, realizes the rapid in-situ mixing and stirring and rapid forming of the road building raw materials, and reduces the intermediate links of the construction. The road surface is repeatedly rolled and strickled by the road leveling machine and the road roller, and the strength and the flatness of the mine transportation road surface can be ensured. The method can improve the strength and the flatness of the mine muddy macadam road, effectively reduce the generation amount of road dust, and simultaneously help to eliminate the potential traffic accident hazard caused by road muddy, reduce the tire abrasion and the rolling friction resistance of the road, improve the transportation efficiency and reduce the abrasion rate of the tire, thereby reducing the production cost by improving the road quality and providing a foundation guarantee for realizing unmanned driving of mines. The method utilizes the polycondensation reaction between the excitant and the slag and the fly ash to obtain a main body part, and then utilizes the weaker polycondensation reaction between the excitant and the original road cemented macadam material to obtain an aggregate part used as filling, so that the compressive strength and the durability of the construction road can be effectively ensured. Meanwhile, as the main body of the road building material adopts industrial waste residues, industrial solid wastes generated by mines and peripheral industrial enterprises can be consumed in a large scale, a circular economy mode taking surface mines as the center can be formed, and the healthy sustainable development of the mines and the peripheral industrial enterprises can be driven. The method is simple in operation process, simple and convenient in construction process and suitable for the requirement of rapid pavement of main transportation main roads for mine construction.
Firstly, determining the raw material ratio in a laboratory:
1. test procedure
(1) And (3) putting the taken-out part of the original road material into a drying box at 105 ℃ for drying for 24h, weighing, then repeating the drying for multiple times, weighing until the mass change of the two times is less than 1 per thousand, determining that the road material is dried, and determining the water content in the road material.
(2) Sampling, screening, grinding, sending to a test center for X-ray fluorescence spectrum test, and performing qualitative and quantitative analysis, wherein the detection results are shown in Table 1.
Table 1: industrial residue detection result
(3) And (4) sieving the field material, and performing grading analysis on the aggregate.
(4) According to the design mixing proportion of each group, composite industrial raw materials (slag, fly ash, exciting agent and water) are sequentially put into a stirrer for stirring, and the stirred mudstone remolded body is put into a mould for moulding by a press.
(5) And (4) demolding the sample, placing the sample in a curing box, curing for 7 days, and preparing to test the strength for 7 days.
(6) The uniaxial compressive strength of the sample is tested by using a universal press, experimental data are derived by a computer, the compressive strength of the sample is obtained, the specific result is shown in table 2, and the compressive strength curve of the material is shown in fig. 2.
Table 2: design proportion and experimental results
Proportion of road building raw materials
The test results show that compared with other tests, the K34 group test has higher strength after 7 days of maintenance, less fly ash and slag consumption and good engineering property and economy, the K34 group test is used as the basis to determine that the road construction raw material ratio is that the slag, the fly ash and the water glass (n is 1.5) is 2: 1: 2, and the concrete construction materials are shown in the following table 3.
Table 3: construction material consumption per square meter
Note: the water content of the liquid sodium silicate purchased by the engineering is 75 percent, and the modulus is 1.5
On-site construction
(1) Construction area
The actual width of the target road is about 30m, the road is not blocked, the test area is divided into a single-side road with the road middle line as a boundary, namely the actual test road width is about 15m, the planned length of one test is 30m, and the total construction area of one test is 450m2。
(2) Original road surface planing and milling machine
Planning and milling the original road surface of the test road by using large-scale cold recycling equipment, wherein the planning and milling depth is 15cm, the once planning and milling width is about 2.2 m, the test area width is 15m, and the planning and milling step can be completed after 7 times of turning back.
(3) First division of a job grid
The test area was divided into 5m by 5m square regions with an area of 25m per square2In 18 squares. The mesh division aims at accurately spreading the powder.
(4) Spreading of coal ash
The powder material is spread manually and uniformly according to the grid division. 45kg of slag and 23kg of fly ash are paved per square meter.
(5) Powder mixing
After the powder is paved, the cold re-rising machine is used for mixing the powder, and the mixing is carried out for 2 times in a reciprocating mode so as to ensure that the powder is fully and uniformly mixed with the original road material. The advancing speed of the cold re-lifting machine is kept at 5m/min, 35min is needed for finishing one-time planning and milling of the experimental road section, and 70min is needed for finishing the construction of the stage.
(8) Mixing with excitant
The cold re-lifting machine is connected with the excitant carrying vehicle through a hard connecting pipeline, and the cold re-lifting machine pushes the excitant carrying vehicle to move forwards. The excitant carrying cart is filled with excitant;
the moving speed of the cold re-lifting machine is kept at 5m/min, and 35min is needed for finishing one planning and milling of the experimental road section.
(9) Operation of road grader
After the activator is mixed and stirred, the road grader starts to operate to scrape the road surface.
(10) Road roller operation
After the operation of the road leveling machine is finished, the road roller starts to operate, the advancing speed is kept at 20m/min, and the road surface is repeatedly rolled for 5 times.
(11) Road maintenance
In order to prevent the erosion of rain in rainy seasons to the newly laid road surface, after the operation of the road roller is completed, a mulching film is laid on the road surface for rain protection, and the mulching film is compacted by using scattered soil behind the road roller.
(12) Quality detection
After 7 days, the test area road can be subjected to drilling coring detection or in-situ detection, the strength of the test area road is more than 10MPa, and the strength requirement of the mine road is met.
The engineering effect is as follows:
through the rolling inspection of on-site vehicles, the phenomena of dust raising, cracking and the like which influence the use of the construction road section do not occur, and the use requirement of the mine road is met.
Claims (9)
1. The solid waste base-activated cementitious road building material is characterized by comprising the following raw materials in parts by mass:
2. the solid waste base-activated cementitious road building material of claim 1,
3. the solid waste base-activated cementitious road building material as claimed in claim 2, wherein said fly ash is a first grade fly ash; the original road material is solid particles with the particle size of 0.1 mm-50 mm.
4. The solid waste base activated cementitious paving material of claim 3, wherein said water glass is liquid sodium silicate.
5. A preparation method of a solid waste base-activated cementitious road building material is characterized by comprising the following steps:
step one, sodium silicate, sodium hydroxide and water are evenly mixed to prepare a water glass excitant with the water content of 75 percent and the modulus of 1.5;
and step two, sequentially putting 23 parts of fly ash, 45 parts of slag, 382 parts of the original road cemented gravel material and 55 parts of the exciting agent prepared in the step one into a stirrer for uniform stirring to obtain the road building material.
6. A method of constructing a road, comprising the steps of:
s1: adopting a powder spreading machine to mix the fly ash and the slag according to a mass ratio of 1: 2 are uniformly paved on the road surface of the original road in proportion;
s2: planning and milling the original soil hardened pavement by using a cold recycling machine, wherein the planning and milling depth is 15 cm; in the process, the original soil hardened pavement is smashed into a cemented gravel material, and the fly ash, the slag and the smashed cemented gravel material are uniformly mixed to form a solid mixed material, so that the primary powder mixing is completed;
s3: filling an excitant in an excitant carrying vehicle, connecting a cold regenerator with the excitant carrying vehicle through a pipeline, enabling the cold regenerator and the excitant carrying vehicle to run at the same speed, carrying out secondary planning and milling on the road surface through the cold regenerator, and injecting the excitant to the road surface through an injection device positioned in front of a cold regenerator planning and milling device while carrying out secondary planning and milling on the road surface, so that the excitant and a solid mixed material are fully mixed, and the secondary excitant mixing is completed;
the excitant is a water glass excitant with the water content of 75% and the modulus of 1.5, and is prepared by uniformly mixing sodium silicate, sodium hydroxide and water;
s4: carrying out road surface leveling operation by adopting a road leveling machine;
s5: rolling the road surface for 4-6 times in a reciprocating manner by using a road roller;
s6: and laying a mulching film on the road surface for rain protection, wherein the maintenance time is 1 d.
7. A road construction method according to claim 6, wherein in S2, the operation speed of the cold regenerator is 5m/min, and the flow rate of the exciting agent injection is 190L/min.
8. A road construction method according to claim 7, wherein in S3, the excitant has a mass fraction of 25% and a water glass modulus of 1.5.
9. A method of building a road according to claim 8, wherein the travel speed of the roller is maintained at 20m/min at S5.
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Cited By (1)
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Inventor after: Zhou Wei Inventor after: Yuan Jinxiang Inventor after: Lu Shengli Inventor after: Liu Dongliang Inventor after: Zhou Meng Inventor after: Qin Huairui Inventor after: Yang Yuqing Inventor after: Zhang Bo Inventor after: Shi Xuyang Inventor after: Zhang Linglei Inventor after: Ji Yongsheng Inventor after: Zhao Binyu Inventor after: Zhu Xiaohan Inventor after: Hu Pengfei Inventor after: Guo Chaohui Inventor before: Shi Xuyang Inventor before: Hu Pengfei Inventor before: Zhu Xiaohan Inventor before: Qin Huairui Inventor before: Lu Shengli Inventor before: Liu Dongliang Inventor before: Zhou Meng Inventor before: Yang Yuqing Inventor before: Zhou Wei Inventor before: Zhang Zhouai Inventor before: Guo Chaohui Inventor before: Yuan Jinxiang Inventor before: Zhao Binyu Inventor before: Zhang Linglei Inventor before: Ji Yongsheng |
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Application publication date: 20210528 |